Hornady lock n load ap spring case retainer - Hornady Lock N Load AP Spring Case Retainer, Pack of 3

The springs are nice for holding your cases in place and you can take the cases out really easy . But if you have trouble with one you need replacement on hand so you can get on with your reloading, I learned the hard way it takes a week to get them and I shooting 3 times a week and burn a lot of ammo .